Yellow phosphorus process to convert toxic chemicals to non-toxic products
Abstract
The present invention relates to a process for generating reactive species for destroying toxic chemicals. This process first contacts air or oxygen with aqueous emulsions of molten yellow phosphorus. This contact results in rapid production of abundant reactive species such as O, O[sub 3], PO, PO[sub 2], etc. A gaseous or liquid aqueous solution organic or inorganic chemicals is next contacted by these reactive species to reduce the concentration of toxic chemical and result in a non-toxic product. The final oxidation product of yellow phosphorus is phosphoric acid of a quality which can be recovered for commercial use. A process is developed such that the byproduct, phosphoric acid, is obtained without contamination of toxic species in liquids treated. A gas stream containing ozone without contamination of phosphorus containing species is also obtained in a simple and cost-effective manner. This process is demonstrated to be effective for destroying many types of toxic organic, or inorganic, compounds, including polychlorinated biphenyls (PCB), aromatic chlorides, amines, alcohols, acids, nitro aromatics, aliphatic chlorides, polynuclear aromatic compounds (PAH), dyes, pesticides, sulfides, hydroxyamines, ureas, dithionates and the like. 20 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7201642
- Patent Number(s):
- 5332563 A
- Application Number:
- PPN: US 7-819758
- Assignee:
- Univ. of California, Oakland, CA (United States) PTO; EDB-94-133278
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 13 Jan 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; INORGANIC COMPOUNDS; DETOXIFICATION; LIQUID WASTES; ORGANIC COMPOUNDS; REMEDIAL ACTION; TECHNOLOGY ASSESSMENT; WASTE PROCESSING; MANAGEMENT; PROCESSING; WASTE MANAGEMENT; WASTES; 540320* - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-)
Citation Formats
Chang, S.G. Yellow phosphorus process to convert toxic chemicals to non-toxic products. United States: N. p., 1994.
Web.
Chang, S.G. Yellow phosphorus process to convert toxic chemicals to non-toxic products. United States.
Chang, S.G. Tue .
"Yellow phosphorus process to convert toxic chemicals to non-toxic products". United States.
@article{osti_7201642,
title = {Yellow phosphorus process to convert toxic chemicals to non-toxic products},
author = {Chang, S.G.},
abstractNote = {The present invention relates to a process for generating reactive species for destroying toxic chemicals. This process first contacts air or oxygen with aqueous emulsions of molten yellow phosphorus. This contact results in rapid production of abundant reactive species such as O, O[sub 3], PO, PO[sub 2], etc. A gaseous or liquid aqueous solution organic or inorganic chemicals is next contacted by these reactive species to reduce the concentration of toxic chemical and result in a non-toxic product. The final oxidation product of yellow phosphorus is phosphoric acid of a quality which can be recovered for commercial use. A process is developed such that the byproduct, phosphoric acid, is obtained without contamination of toxic species in liquids treated. A gas stream containing ozone without contamination of phosphorus containing species is also obtained in a simple and cost-effective manner. This process is demonstrated to be effective for destroying many types of toxic organic, or inorganic, compounds, including polychlorinated biphenyls (PCB), aromatic chlorides, amines, alcohols, acids, nitro aromatics, aliphatic chlorides, polynuclear aromatic compounds (PAH), dyes, pesticides, sulfides, hydroxyamines, ureas, dithionates and the like. 20 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {7}
}